30:[{"id":"3be8083d4f40cf2b569a7877d48d162fa70279399b0bc7200500330b0a303a9ce3e560027930eeb30474ab2208e8439d45329ba5288a110de62f043dc0c66e90","href":"https://static.observableusercontent.com/files/3be8083d4f40cf2b569a7877d48d162fa70279399b0bc7200500330b0a303a9ce3e560027930eeb30474ab2208e8439d45329ba5288a110de62f043dc0c66e90","name":"mooninfo_2022.json","type":"application/json","lastModified":1661325065199.865,"size":2093791}] 2e:{"title":"The Moon in 2022","cells":[{"id":0,"value":"# The Moon in 2022\n## From [NASA Scientific Visualization Studio: Moon Phase and Libration](https://svs.gsfc.nasa.gov/4955)\n\nForked from [@forresto](/@forresto/the-moon-now). Scrub through NASA’s video renders of the moon for 2022. Videos are large and may stutter until fully loaded. Feel free to grab the scrubber and move it to your preferred time.\n\nMaybe surprisingly, these are 3D renders derived from moon orbiter data, not successive images captured through a ground-based telescope:\n\n> Lunar Reconnaissance Orbiter ([LRO](https://lunar.gsfc.nasa.gov/)) has been in orbit around the Moon since the summer of 2009. Its laser altimeter ([LOLA](https://lola.gsfc.nasa.gov/)) and camera ([LROC](http://lroc.sese.asu.edu/)) are recording the rugged, airless lunar terrain in exceptional detail, making it possible to visualize the Moon with unprecedented fidelity. ","pinned":false,"hidden":false,"mode":"md"},{"id":316,"value":"viewof hour = Scrubber(hours, {\n format: (hour) => hour.time,\n delay: 50,\n loop: false\n})","pinned":false,"hidden":false,"mode":"ojs"},{"id":456,"value":"Plot.plot({\n marks: [\n Plot.tickX(hours, { x: \"t\", stroke: \"phase\" }),\n Plot.dot([hour], { x: \"t\", stroke: \"salmon\", r: 3 })\n ],\n x: { label: null },\n color: { range: [\"darkgray\", \"white\"] },\n marginTop: 1,\n marginLeft: 70,\n marginBottom: 20,\n height: 26,\n width: width - 148\n})","pinned":false,"hidden":false,"mode":"ojs"},{"id":234,"value":"combined = html`

`","pinned":false,"hidden":false,"mode":"ojs"},{"id":658,"value":"The videos are timed to correspond to the entire year exactly. NASA publishes hourly calculations alongside them. So, the index of the current hour can be used to set the videos to the corresponding timestamp.","pinned":false,"hidden":false,"mode":"md"},{"id":718,"value":"hours","pinned":true,"hidden":false,"mode":"ojs"},{"id":491,"value":"hours = (await FileAttachment(\"mooninfo_2022.json\").json()).map((d, i) =>\n Object.defineProperties(d, {\n i: { value: i },\n t: { value: parse(d.time) }\n })\n)","pinned":true,"hidden":true,"mode":"ojs"},{"id":242,"value":"videoTime = orbit.currentTime = moon.currentTime = (hour.i / (hours.length - 1)) * duration","pinned":true,"hidden":false,"mode":"ojs"},{"id":284,"value":"duration = Generators.observe((change) => {\n const inputted = () => change(moon.duration);\n moon.pause();\n moon.addEventListener(\"loadedmetadata\", inputted);\n change(moon.duration || 292);\n return () => moon.removeEventListener(\"loadedmetadata\", inputted);\n})","pinned":true,"hidden":false,"mode":"ojs"},{"id":432,"value":"moon = combined.querySelector(\"video.moon\")","pinned":true,"hidden":false,"mode":"ojs"},{"id":436,"value":"orbit = combined.querySelector(\"video.orbit\")","pinned":true,"hidden":false,"mode":"ojs"},{"id":503,"value":"parse = d3.utcParse(\"%d %b %Y %H:%M UT\")","pinned":true,"hidden":false,"mode":"ojs"},{"id":370,"value":"","pinned":true,"hidden":false,"mode":"html"},{"id":311,"value":"import { Scrubber } from \"@mbostock/scrubber\"","pinned":true,"hidden":false,"mode":"ojs"}],"files":"$W30","stdlib":"1","titling":"auto"}